Developer Utilities

Decode URL/Base64 payloads, normalize JSON, and inspect timestamps from one debugging workspace.

Convert plain text and binary bytes in both directions.

Convert text to hex bytes and decode hex to text.

Convert integers between bases 2, 8, 10, and 16.

Decode, build, and verify JWT tokens — entirely client-side (HS256).

Compare two semantic versions.

Test regular expressions with live match highlighting and capture group table.

Parse CRON expressions, describe them in plain language, and preview the next 10 runs.

Look up HTTP status codes and meanings.

Paste a base version plus two edits and see conflicts, one-sided changes, and auto-merge candidates.